There is a new attraction in town, not for the fainthearted. A wax museum that recreates for the thrills of a paying audience some of the most gruesome murders ever committed by human hands. A young man bets with his friends that he will spend an entire night in the museum but is found dead the morning after. Who is the savage slayer? The police is unable to come up with a reason or a clue to identify the murder. Weirdly enough, the museum starts featuring new murder scenes as the killing spree increases. Maybe that metal-clawed killer that haunted Paris in past years is back, this time prowling on the streets of Rome looking for fresh blood and young flesh.